The two villages on the coast, Audresselles and Ambleteuse are combined in one menu. Strongpoint Heidelberg, nr 170, was built along the promenade of Audresselles: Wn 202 is north of Ambleteuse and has a bunker with an unknown function and a nice tobruk. Stützpunkt Brachvogel covered the small estuary of the river La Slack, which runs south of Ambleteuse into the sea. More inland we visited Slack, Wn Drossel 1 and we continue the trip along the coast with Slack les Dunes.
This beach-obstacle remains in the estuary.